Sustainable Cities
A global interop track, rooted in local priorities
The Sustainable Cities Community Track is an open, evolving initiative that helps cities and their ecosystems experiment with digital wallets and verifiable credentials, in practice.
It starts local: in your language, with your branding, your partners, and use cases that matter to your context. But everything is aligned with global standards, so solutions can scale, interoperate, and be reused.
This track brings together cities, certification bodies, universities, building companies, technology providers, public institutions and other organizations, all working toward trusted digital interactions that benefit people, organizations, and society at large.
Reusable use cases and credentials
Each participating city can configure its own use cases, from public procurement to citizen services or city cards. To accelerate adoption, a set of default use cases and credentials is already available:
Default use cases:
- Procurement
- Recruitment
- Employee onboarding
- City card (e.g. for local discounts or mobility services)
Reusable credentials:
- PID (Person Identifier)
- LPID (Legal Person Identifier)
- VAT (VAT Registration)
- IBAN (Bank Account)
- CriminalRecordCheck
- VerifiedEmployee
- HigherEducationDiploma
- UpperSecondaryEducationCertificate
- ISOcertificate
Each credential can be issued by a trusted party, universities, certification bodies, or authorities, and used in any track. Schema’s can be found here. Reference issuers are provided by FIDES Labs for sandbox use, but the goal is to involve other and real organizations as issuers over time.
Launch packs: a fast track into the ecosystem
To make it easier for cities to get started, FIDES Labs offers a “launch pack”, a ready-to-go setup that includes:
- A bilingual sandbox city portal in your local branding
- Integration with a trusted organizational wallet
- Preconfigured use cases and credentials
- Guidance and coordination to join the Sustainable Cities track
Cities like Rotterdam have already committed to this approach, using the track to let civil servants, suppliers, and citizens experience the technology in practice.
👉 Note: FIDES Labs does not hold exclusive rights to offer launch packs. Any organization can create similar setups using the open community infrastructure.
CirculaCity — explore the example city
To show what’s possible, we’ve launched a fictional example: CirculaCity, a fully working sandbox portal for demonstration and inspiration.
It reflects the Sustainable Cities default setup and helps partners, developers, and policymakers visualize what this technology can do.In the coming months, real cities and organizations will be added, each with their own environment, use cases, and credentials.
During GDC25 we will showcase the first milestone with live demos of complete credential flows, and we warmly invite additional cities from other countries to plug in.
Think Global, Act Local
Many cities (and their partners) initially focus on local needs, their citizens, laws, and systems. Global interoperability is not always the starting point. This track shows that you don’t need to choose. You can begin with your own priorities and still be part of something larger.
Whether it’s a Dutch city, a Greek university, or a Kenyan logistics firm: all can issue and use credentials that work across contexts. Interoperability isn’t just a technical ideal. It’s a practical enabler for cooperation and reuse.
Get Involved
Whether you’re a city, tech provider, university, or public service organization: you can join the Sustainable Cities track by using existing tools, launching your own portal, or proposing new use cases.
Get in touch with the FIDES Labs team or propose your own track and help shape the ecosystem.